Wrench.



P'ATBNTED MAY 24, 1904.

- s. HOLZINGER.

WRENCH.

APPLIOATION FILED FEB. 26, 1904.

N0 MODEL.

cording to my invention.

Patented May 24, 1904.

STEFAN HOLZINGER, OF HOMESTEAD, PENNSYLVANIA.

WRENCH...

SPECIFICATION forming part of Letters Patent No. 760,867, dated May 24,1904. Application filed February 26, 1904. Serial No. 195,433. (Nomodel) To all whom it may concern.-

Be'it known that I, STEFAN HOLZINGER, a citizen of the United States ofAmerica, residing at Homestead, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inWrenches, of which the following is a specification, reference being hadtherein to the accompanying drawings.

My invention has relation to monkeywrenches, and has for its object theprovision of novel means for securing the sliding jaw of the wrench inany position to which it may be adjusted.

My invention consists in the novel construction, combination, andarrangement of parts hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation of a wrenchconstructed ac- Fig. 2 is a rear ele. vation, the handle being removed.Fig. 3 is a similar view with the sliding jaw in section. Fig. 4 is aperspective View of a-racked plate carried by the sliding jaw. Fig. 5 isa perspectiveview of the. sliding jaw with the movable parts thereofdetached. Figs. 6 and 7 are perspective views of the removable parts ofthe sliding jaw. I

The shank 1 of the wrench is provided with the usual stationary jaw 2and handle 3, these parts being of the ordinary construction. A rack 4is formed on one side of the shank, and upon the shank is arranged asliding jaw, 5.

The jaw 5 has a dovetailed groove 6 in one of.

its sides, and the wall of the sliding jaw within the groove is cutaway, as shown at 7, an oval opening being formed, in which is fitted aplate 8, having teeth 9 on its inner side and the rib 10 on its outerside. A plate 11 is formed with a flange 12 on its upper end and fitsand slides in the dovetailed groove 6 of the sliding jaw, the edges ofthe plate being bev- I eled to correspond to the dovetailed groove inthe jaw, and the said plate 11 is formed with a laterally-disposedconcavity 13, which is partly intersected bya longitudinal slot 14:,through which is passed a screw 15, that screws into a hole 16 in theplate 8. The plate 11 is also formed with, a longitudinal groove 17,which serves as a guide for the upturned ends 18 of a spring 19, that issustained in position against the outer side of plate 11 by the screw15,which passes through a hole 20 in the said spring. A thumb-piece 21is fixed at the lower end of the plate 8 and serves to aid in pushingthe plate up and down on the sliding jaw.

The parts bging constructed and arranged as described are fittedtogether as shown in Fig. 8-that is, with the plate 8 resting in theorifice 7 and the plate 11 in the dovetailed groove 6 in such positionrelatively to the plate 8 that the rib 10 on the back of the plate8-rests in the concavity 13 of the plate 11, the resiliency of thespring 19 serving to draw the plate 8 outward, 'so that its teeth willbe disengaged from the teeth of the rack on the shank. In this positionof parts the sliding jaw may be moved up and down the shank,

and when it is desired to fasten the jaw at any position to which it maybe adjusted the plate 11 is moved upwardly by pressing against the lug21, the slot 14 permitting of such movement, and when the plate is movedin this manner the flat surface of the plate riding upon the rib 10 ofplate 8 overcomes the resistance of spring 19 and causes the plate 8 tobe pressed inwardly, thus bringing its teeth into engagement with theteeth on the shank. is desired to disengage the teeth on the plate 8from the teeth on the shank, it is only necessary to push the platedownwardly, whereupon the concavity 13 will register with the rib 10 andthe spring 19 will draw the plate 8 outwardly and disengage its teethfrom the teeth of the rack.

When it Having described my invention, I claim teeth on its inner faceand a rib on its back,

a sliding plate fitting in said dovetailed groove and having a concavityadapted to receive the rib on said toothed plate when the latter isdisengaged from the rack on the shank.

2. In a wrench, the combination with a shank having a fixed jaw and arack on its side, of a sliding jaw having a dovetailed groove in itsside, and an opening adjacent to the rack plate and screwing into thetoothed plate, suh- 10 of the shank, a toothed plate fitting saidopenstantially as described. ing and having a rib on its back, aslidable In testimony whercoflaflix mysignaturcin filate arranged insaid dovetailed groove alnd the presence of two Witnesses.

aving a concavity on its inner face, a s ot r' 1 partially intersectingsaid concavity, an in- STEFAN HOLAINGEI turned flange and a lug on itsopposite ends, Witnesses: a spring bearing on said slidable plate and aH. 0. Emma,

. screw passing through the slot in the slidable JOHN GROETZINGER.

